Avg weather in September
12 Hrs per day
76 mm per month
72 % avg
5 Mph avg

Florence Weather in September

What’s the weather like in Florence in September?

The Mediterranean climate begins to cool down in Florence in September, which marks the start of the autumn season. There’s still plenty of daily sunshine to enjoy, but there’s also a higher chance of rain, which means you’ll need to pack your waterproof jacket.

Geographical influences

Florence weather in September is very pleasant with the warm weather holding up for most of the month. It’s the start of autumn in Italy, so you can expect things to cool down slightly. However, you’ll still get to enjoy plenty of warm sunshine throughout the month with almost as much sunshine as the summer. It’s also a lot quieter in the city in September, which is perfect if you prefer a relaxing holiday with fewer crowds.


The average rainfall is 60mm, which means you can expect nine rainy days throughout the month. Temperatures reach highs of 29°C during the day with lows of 14°C at night. There are ten hours of daily sunshine in September, which has decreased since the summer. With warm days and cooler nights, you’ll need to pack light clothing and warmer items for when you’re out exploring the city in the evening. Humidity levels are around 63%, which rarely falls below 42% or above 94%.

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